In Situ Synthesis of Bismuth Nanoclusters within Carbon Nano‐Bundles from Metal–Organic Framework for Chloride‐Driven Electrochemical Deionization

Abstract

Ultrasmall metal nanoclusters (MNCs, <3 nm) have emerged as a novel class of functional nanomaterials. Different from the prosperous development of noble MNCs, the fabrication of non‐noble MNCs remains a major challenge, which greatly curtails the advance of relevant application fields. Herein the authors put forward an in situ synthesis strategy of bismuth nanoclusters (Bi NCs) within carbon nano‐bundles (Bi NCs@CNBs) by simply carbonizing the Bi‐containing metal–organic framework (Bi‐MOF), and deploy it as a Cl− capturing electrode for electrochemical deionization (EDI) towards the relief of global freshwater scarcity. Of note, as a “killing two birds with one stone” strategy, the Bi‐MOF not only makes the in situ formation of Bi NCs possible but also provides a reinforcing “carbon shell” for better electronic conductivity and structural stability. As a result, the Bi NCs@CNB‐based EDI system displays ultrafast desalination (0.52 mg g−1 s−1) with outstanding cycling stability, which is beneficial from the ultrasmall size of the electrode material and cannot be achieved by large‐sized Bi nanoparticle‐based system. This work is interesting because it unprecedentedly introduces ultrasmall MNCs into EDI to manipulate the surface‐controlled Cl− storage for ultrafast EDI, boosting the advances of both non‐noble MNCs and their application in EDI.

Encapsulation of AIEgens within Metal–Organic Framework toward High‐Performance White Light‐Emitting Diodes

“…[27][28][29] The modifiable pore characteristics endow MOFs with excellent function via encapsulation of various guest molecules such as quantum dots, nanoparticles, polyoxometalates, and polymers. [30][31][32][33][34][35][36][37] The resultant MOF composites often achieve better performance than individual components. Although many recent studies of host-guest hybrid MOFs for whitelight emission have been reported, [38][39][40][41][42][43][44] the intrinsic parameters such as the quantum yield, color-rendering index (CRI), especially for bicolor complementary WLE phosphors, still need to be improved.…”

Recent progress in materials and architectures for capacitive deionization: A comprehensive review

“…The material had excellent stability over 30 cycles, in which only 9.4% reduction in SAC was observed. Liu, Wang, Yao, et al (2021) synthesized bismuth nanoclusters (Bi NCs) in carbon nano-bundles (Bi NCs@CNBs) by carbonizing the Bi containing metal-organic framework (Bi-MOF) and employed the same material as Cl À capturing electrode. The Bi-MOF provides better electronic conductivity and structural stability, exhibiting ASAR of 0.52 mg/g/s with better cycling stability.…”

In Situ Implantation of Bi2S3 Nanorods into Porous Quasi-Bi-MOF Architectures: Enabling Synergistic Dissociation of Borohydride for an Efficient and Fast Catalytic Reduction of 4-Nitrophenol

“…12−14 Among them, bismuth (Bi)-based compounds have emerged as promising active materials for a variety of catalysis applications due to their earth abundance, low cost, and less toxicity. 15 activity. 18 Consequently, carbon substrates are introduced to support Bi nanoparticles for catalytic 4-NP conversion.…”

“…Unlike magnetic metals such as iron, cobalt, and nickel, which are prone to aggregation, nonmagnetic transition metals are more suitable for stable and long-term catalysis. − Among them, bismuth (Bi)-based compounds have emerged as promising active materials for a variety of catalysis applications due to their earth abundance, low cost, and less toxicity. − Several bismuth-based catalysts have been recently implemented for the catalytic reduction conversion of 4-NP. The semimetallic Bi nanoparticles were first demonstrated as a potential candidate for catalytic 4-NP reduction with a normalized rate constant of 27.51 s –1 g –1 ; however, their easy aggregation remarkably deteriorated the catalytic activity .…”